111313100281 has 2 divisors, whose sum is σ = 111313100282. Its totient is φ = 111313100280.

The previous prime is 111313100273. The next prime is 111313100341. The reversal of 111313100281 is 182001313111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81287141881 + 30025958400 = 285109^2 + 173280^2 .

It is a cyclic number.

It is not a de Polignac number, because 111313100281 - 2³ = 111313100273 is a prime.

It is a super-2 number, since 2×111313100281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111313100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656550140 + 55656550141.

It is an arithmetic number, because the mean of its divisors is an integer number (55656550141).

Almost surely, 2^111313100281 is an apocalyptic number.

It is an amenable number.

111313100281 is a deficient number, since it is larger than the sum of its proper divisors (1).

111313100281 is an equidigital number, since it uses as much as digits as its factorization.

111313100281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 111313100281 its reverse (182001313111), we get a palindrome (293314413392).

The spelling of 111313100281 in words is "one hundred eleven billion, three hundred thirteen million, one hundred thousand, two hundred eighty-one".